HUUM STEEL Electric Sauna Heater: Slender and Elegant

Description

The HUUM STEEL sauna heater is a slim electric sauna heater with remarkably small safety distances, which makes it perfect for saunas with limited spaces. The STEEL sauna heater is designed for saunas up to 600 cubic feet.

Thanks to its well-optimized structure the safety distances from the walls are exceptionally short. The CLIFF heater also comes in an even slimmer 3.5 kW wall-mounted model which is particularly suitable for very small sauna rooms.

The contemporary and minimalist design of the heater creates an elegant focal point in your sauna. Despite its compact size, this powerful heater can reach a maximum temperature of 230F and even offers Wi-Fi control capabilities.

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Features

• Slim design & small safety distances: ideal for use in saunas with limited space
• Heats up to 25% faster due to internal air duct
• For sauna rooms from 176 to 600 cu. ft.
• 331 pound stone capacity (10 boxes, sold separately)
• Large stone capacity creates a longer and milder heat
• Pour water on stones for steam
• Direct contact between stones and heating elements
• Stainless steel construction
• Stainless steel, industrial quality heating elements​
• Floor Installation
• Optional Wi-Fi to control from mobile phone
• Works with UKU controls (sold separately)
• Designed, engineered, and made in Estonia
• Dimensions: 12.6" W (320mm) x 12.6" W (320mm) x 38.4" H (975mm)
• Limited 5-year warranty (excluding heating elements)
  
  

Specifications        

All STEEL models:

• Voltage/Phase: 240V/1PH
• Dimensions: 12.6" Width x 12.6'' Depth x 38.4" Height
• Stone Capacity: 330 lbs (130 lbs for 3.5kW)
• Min/Max Temperature: 104 F / 230 F
• Installation: Free-Standing

STEEL 6 kW:

• Sauna room: 212-353 ft³
• Amps: 25 A
• Heater Weight: 33 lbs
• Shipping weight with sauna stones: 364lbs

STEEL 9 kW:

• Sauna room: 318-529 ft³
• Amps: 37.5 A
• Heater Weight: 33 lbs
• Shipping weight with sauna stones: 364lbs

STEEL 10.5 kW:

• Sauna room: 353-600 ft³
• Amps: 43.75 A
• Heater Weight: 35 lbs
• Shipping weight with sauna stones: 366lbs

Minimum Safety Clearances:

• CLIFF 6: Safety Distances - A: 0.19" - B: 16.5" - H: 38.4"
• CLIFF 9: Safety Distances - A: 3.94" - B: 20.5" - H: 38.4"
• CLIFF 10.5: Safety Distances - A: 3.94" - B: 20.5" - H: 38.4"

What's in the box

Included:

• HUUM STEEL Sauna heater
• Installation and Operation manual
• 5-Year limited warranty (excluding heating elements)

How to Install

For the detailed Installation Instructions and Electrical Connections, please refer to the following document: HUUM STEEL Series Installation and Operation Manual

Please note: the electrical connection of the device must be performed by a qualified electrician in accordance with the applicable standards and requirements.

Additional Resources

HUUM Certificate Of Compliance

For Simple Sauna Sizing, please follow the link HUUM - Sizing Your Heater. Choose the heater with power adequate to the cubage of the sauna room.  However, for non-insulated walls (brick, glass block, glass, concrete, etc.) a more powerful heater is needed. Add 1,2 m³ to the cubage of the steam room per each square meter of uninsulated wall. For example, a 10 m³ sauna room with a glass door corresponds to the power requirement of a 11.5 m³ sauna room.

Accessories and Add-ons

The following options should be considered with your heater purchase.

Sauna Stones 

Required for Operation. Sold Separately.

The HUUM round sauna stones of Olivine diabase are durable and their thermal capacity is high. It’s recommended to use round sauna stones in HUUM sauna heaters as they complement the design of the heaters and provide milder steam.

You regulate the heat and steam of the sauna by throwing water on the sauna rocks. The shape, size and composition of the stones, and their placement in the heater make all the difference. We recommend round sauna rocks because they provide milder steam. The round shape ensures that the water reaches inner stones and evaporates gradually instead of vaporizing in one go from the top layer. Sauna rocks are highly visible in HUUM sauna heaters, and you’ll need smaller and larger stones for filling the heater evenly without noticeable gaps. We suggest stacking a denser top layer with slightly smaller stones. This enhances the accumulation of heat.

• HUUM STEEL sauna heater requires approximately : 331lbs sauna stones with a diameter of 1-2 in (3-5 cm). 10 boxes x 33lbs (15kg)

UKU Sauna Control

Required for Operation. Sold separately. 

Your sauna controller. Multiple options including Wi-Fi capable.

1. Choose the model. The UKU Control comes in two different models: UKU Local or UKU WiFi, choose what best suits your needs.

• UKU Local control system is perfect if you prefer to heat your sauna on the spot or don’t have a network connection in your location. With the stylish control panel on the wall, you can easily adjust the temperature, heating time, and more.

  You can also connect the sauna lighting, ventilation, and steamer to the control system for added convenience. Overheating protection and a child lock take care of the safety of your sauna. If you change your mind and want to control the sauna from the app, you can simply add Wi-Fi capability later.

• UKU WiFi control system is an excellent option for saunas in areas with WiFi coverage, such as homes, offices, or accommodations. With this system, you can heat your sauna using the control panel on-site or from your mobile phone, no matter where you are at the moment.

  HUUM app allows you to easily set the start and end time of heating, the target temperature, and check the current temperature of the sauna. Plus, you’ll receive a notification when the sauna is warm and ready to use.

  You can also connect the sauna lighting, ventilation, and steamer to the control system for added convenience. Overheating protection and a child lock take care of the safety of your sauna.

2. Choose the casing. There are different casing designs options, choose the one that suits the interior design of your sauna and to matches your style: CLASSIC, WOOD and GLASS.

HUUM UKU WiFi and UKU Local Installation and Operation Manual

UKU WiFi and UKU Local Installation and Operation Manual

Extension Box, for UKU Sauna Control System

Required for Operation. Sold separately.

The extension module for UKU sauna control system is an accessory that is necessary when the wattage of the sauna heater exceeds the power of the main module.

The main module can control up to 9kW heaters, above that an extension box is needed.

• Required for Operation, for all HUUM heaters over 9kW
• For use with UKU controls
• Light Grey
• Wall-mounted design
• Dimensions: 7" W (178mm) x 4" D (101mm) x 10" D (254mm)
• Limited 5-year warranty

HUUM Extension Box for UKU Sauna Control System Wiring Instructions

Safety Railing

Optional.

The safety railing for STEEL heaters helps to avoid accidental contact with the hot heater. The sauna railing is made of light wood profiles, and its fasteners from stainless steel. Not only does the safety railing provide safer sauna sessions, it also gives a stylish complement to the interior of your sauna room.

• Helps prevent accidental contact with heater
• Beautiful light-colored wood compliments the design of the heater
• Stainless steel supports for attaching to the heater
• Easy to install
• For use with STEEL sauna heaters

HUUM STEEL Safety Railing Manual

Reflector Panel

Optional.

The placement of a HUUM reflector panel on the heater, allows to divide by half the safety distances from the walls. It is made of stainless steel and is mounted on the side of the heater. The reflectors can be connected to each other.

• Allows for heater installation closer to wall
• Stainless steel construction
• Single panel
• Can be mounted to any side of the heater
• Various reflectors can be connected to each other
• For use with STEEL sauna heaters

HUUM STEEL Reflector Panel Manual

Embedding Flange

Optional.

The embedding flange is useful when planning to install the sauna heater partially inside the sauna platform. The embedding flange is made of stainless steel and covers the uneven wooden edges around the heater, creating a clean and smooth finish. The HUUM Flange CS was designed for use with the Cliff or Steel Series sauna heaters.

• Stainless steel construction
• Covers uneven wooden edges around the heater
• Creates a clean & smooth finish
• Protects against heat radiation
• Works with Cliff & Steel series sauna heaters (except Cliff mini & Steel mini)

HUUM STEEL Embedding Flange Manual

Free Shipping & Returns

Yes, we truly offer FREE shipping! Your order will be delivered at no extra cost to any location within the lower 48 states.

For shipping inquiries to Alaska or Hawaii, feel free to reach out via our live chat—we’d be happy to provide a custom freight quote.

The weight or packaging of this product requires delivery by special appointment, and on a wooden pallet. 

The driver is responsible for curbside delivery “only” and will lower the items to ground level. 

Regarding Returns, please refer to our Returns & Refund Policy.

Warranty

Limited 5-year warranty (excluding heating elements)

HUUM Heater Warranty